package com.dhecp.common.core.controller;

import java.beans.PropertyEditorSupport;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.shiro.SecurityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.dhecp.common.core.domain.AjaxResult;
import com.dhecp.common.core.domain.AjaxResult.Type;
import com.dhecp.common.core.page.PageDomain;
import com.dhecp.common.core.page.TableDataInfo;
import com.dhecp.common.core.page.TableSupport;
import com.dhecp.common.utils.DateUtils;
import com.dhecp.common.utils.ServletUtils;
import com.dhecp.common.utils.StringUtils;
import com.dhecp.common.utils.sql.SqlUtil;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * web层通用数据处理
 * 
 * @author ruoyi
 */
public class BaseController
{
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    /**
     * 将前台传递过来的日期格式的字符串，自动转化为Date类型
     */
    @InitBinder
    public void initBinder(WebDataBinder binder)
    {
        // Date 类型转换
        binder.registerCustomEditor(Date.class, new PropertyEditorSupport()
        {
            @Override
            public void setAsText(String text)
            {
                setValue(DateUtils.parseDate(text));
            }
        });
    }

    /**
     * 设置请求分页数据
     */
    protected void startPage()
    {
        PageDomain pageDomain = TableSupport.buildPageRequest();
        Integer pageNum = pageDomain.getPageNum();
        Integer pageSize = pageDomain.getPageSize();
        if (StringUtils.isNotNull(pageNum) && StringUtils.isNotNull(pageSize))
        {
            String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
            PageHelper.startPage(pageNum, pageSize, orderBy);
        }
    }

    /**得到ModelAndView
     * @return
     */
    public ModelAndView getModelAndView(){
        return new ModelAndView();
    }

    /**
     * 获取request
     */
    public HttpServletRequest getRequest()
    {
        return ServletUtils.getRequest();
    }

    /**
     * 获取response
     */
    public HttpServletResponse getResponse()
    {
        return ServletUtils.getResponse();
    }

    /**
     * 获取session
     */
    public HttpSession getSession()
    {
        return getRequest().getSession();
    }

    /**
     * 响应请求分页数据
     * @param list
     * @return TableDataInfo
     * @author DH-Xxj
     */
    @SuppressWarnings({ "rawtypes", "unchecked" })
    protected TableDataInfo getDataTable(List<?> list){
        TableDataInfo rspData = new TableDataInfo();
        rspData.setData(list);
        rspData.setMsg("操作成功");
        rspData.setCode(0);
        rspData.setCount(new PageInfo(list).getTotal());
        return rspData;
    }

    /**
     * 响应请求分页数据
     * @param list
     * @param countRow 总记录数
     * @return TableDataInfo
     * @author DH-Xxj
     */
    protected TableDataInfo getDataTable(List<?> list, Integer countRow){
        TableDataInfo rspData = new TableDataInfo();
        rspData.setData(list);
        rspData.setMsg("操作成功");
        rspData.setCode(0);
        rspData.setCount(countRow);
        return rspData;
    }
    
    /**
     * 响应请求分页数据出现错误时返回错误信息
     * @param errormsg
     * @return TableDataInfo
     * @author DH-Xxj
     */
    protected TableDataInfo getDataTable(String errormsg){
        TableDataInfo rspData = new TableDataInfo();
        rspData.setMsg(errormsg);
        rspData.setCode(500);
        rspData.setCount(0);
        return rspData;
    }
    
    /**
     * 响应返回结果
     * 
     * @param rows 影响行数
     * @return 操作结果
     */
    protected AjaxResult toAjax(int rows)
    {
        return rows > 0 ? success() : error();
    }

    /**
     * 响应返回结果
     * 
     * @param result 结果
     * @return 操作结果
     */
    protected AjaxResult toAjax(boolean result)
    {
        return result ? success() : error();
    }

    /**
     * 返回成功
     */
    public AjaxResult success()
    {
        return AjaxResult.success();
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error()
    {
        return AjaxResult.error();
    }

    /**
     * 返回成功消息
     */
    public AjaxResult success(String message)
    {
        return AjaxResult.success(message);
    }

    /**
     * 返回成功数据
     */
    public static AjaxResult success(Object data)
    {
        return AjaxResult.success("操作成功", data);
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error(String message)
    {
        return AjaxResult.error(message);
    }

    /**
     * 返回错误码消息
     */
    public AjaxResult error(Type type, String message)
    {
        return new AjaxResult(type, message);
    }

    /**
     * 页面跳转
     */
    public String redirect(String url)
    {
        return StringUtils.format("redirect:{}", url);
    }

    /**
     * 传入错误（异常）信息，返回错误页面进行提示
     * @param msg 错误（异常）信息
     * @return ModelAndView
     * @author DH-Xxj
     */
    public ModelAndView gotoModelAndViewErrorPage(@RequestParam String msg){
    	ModelAndView mv = this.getModelAndView();
        AjaxResult ajaxResult = AjaxResult.error(msg);
        mv.addObject("ajaxResult", ajaxResult);
    	if(StringUtils.isNotNull(SecurityUtils.getSubject().getPrincipal())){//没有用户则回到登录页
            mv.setViewName("error/mv_error");
    	}else{
    		mv.setViewName("login");
    	}
        return mv;
    }
    /**
     * 验证必要参数是否缺失，若缺失返回到错误页面
     * @param params 待验证的map参数
     * @param needkey params中必需存在的key
     * @return ModelAndView
     * @author DH-Xxj
     */
    public ModelAndView gotoModelAndViewErrorPage(@RequestParam Map<String, Object> params, @RequestParam String needkey){
        return this.gotoModelAndViewErrorPage(params,needkey,"noneedkeycaption");
    }

    /**
     * 验证必要参数是否缺失，若缺失返回到错误页面
     * @param params 待验证的map参数
     * @param needkey params中必需存在的key
     * @param needkeycaption params中必需存在的key的中文说明
     * @return ModelAndView
     * @author DH-Xxj
     */
    public ModelAndView gotoModelAndViewErrorPage(@RequestParam Map<String, Object> params, @RequestParam String needkey, @RequestParam String needkeycaption){
        ModelAndView mv = this.getModelAndView();
        if (params.get(needkey) == null || params.get(needkey) == ""){
            String msg;
            if ("noneedkeycaption".equals(needkeycaption)){
                msg = "请提供参数：" + needkey;
            }else{
                msg = "请提供参数：" + needkey + " [" + needkeycaption + "]";
            }
            AjaxResult ajaxResult = AjaxResult.error(msg);
            mv.addObject("ajaxResult", ajaxResult);
            mv.setViewName("error/mv_error");
            return mv;
        }
        return mv;
    }

    /**
     * 捕获异常提示信息
     * @param e
     * @return msg
     * @author DH-Xxj
     */
    public String getExceptionMessage(Exception e){
        String msg = "";
        try{
            msg = e.getCause().getMessage();
        }catch(Exception ec){
            msg = e.getMessage();
        }
        return msg;
    }
}
